1, the black disk of the electric vehicle power sensor is a magnetic disk, and the module with cable is a power sensor. The cable consists of three cores, namely 5V power supply (red line), grounding (black line or yellow line) and signal output (green line or blue line). These three wires can be connected with handlebar wires of the same color or function.

2. The sensor and the disc are installed on the right side of the central shaft, wherein the sensor is installed on the outer frame of the central shaft and fixed by a magnetic cap, and the disc is installed on the central shaft. In this way, when assisted by human feet, the disc rotates with the central axis, which is detected by the sensor, and then amplified and shaped by the module to form a pulse auxiliary signal.

3. After the signal is amplified by the controller, it will drive the motor to rotate and realize the power-assisted control.